英语词汇“caffeine”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

caffeine

/ˈkafiːn

noun [mass noun]

An alkaloid compound which is found especially in tea and coffee plants and is a stimulant of the central nervous system.

The stimulant effects of caffeine in coffee are well known to help improve energy and alertness....

They have a similar effect to tea or coffee, since they contain the same alkaloid, caffeine.
In flowering plant pollen tubes, caffeine disrupts vesicle zonation at the tip and stops elongation.

Mid 19th century: from French caféine, from café 'coffee'.

单词	caffeine
释义	caffeine /ˈkafiːn / noun [mass noun] An alkaloid compound which is found especially in tea and coffee plants and is a stimulant of the central nervous system. chemical formula: C₈H₁₀N₄O₂. The stimulant effects of caffeine in coffee are well known to help improve energy and alertness.... They have a similar effect to tea or coffee, since they contain the same alkaloid, caffeine. In flowering plant pollen tubes, caffeine disrupts vesicle zonation at the tip and stops elongation. Origin Mid 19th century: from French caféine, from café 'coffee'.
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